EOS has launched the EOS M4 ONYX metal 3D printing system on the first day of Formnext.
The company believes the M4 ONYX, along with the EOS M4 ONYX FLX, will set new standards for industrial metal 3D printing productivity. These printers are being positioned as successor models to the M 400 and M 400-4 machines, respectively.
Designed to meet the needs of customers in energy, defence, space, aviation and the semiconductor sectors, the EOS M4 ONYX comes with a larger build volume (450 x 450 x 360 mm) and higher productivity thanks to new laser configurations. The M4 ONYX system will be equipped with six 400W lasers, which is said to deliver a 50% higher throughput and reduce part costs by 30%, while the M4 ONYX FLX will feature four 1kW beam-shaping lasers for further enhancements to speed and flexibility.
EOS is replacing the M 400 series with the M4 ONYX series – here’s what’s different.
Other key features include a homogenous gas flow capability and active temperature control, integrated error detection that is said to reduce quality assurance expenses by 50%, and more than 90% material recovery which help to reduce raw material costs and waste. The RFS Pro filtration eliminates consumables and eliminates hazardous condensate, while EOS Smart Fusion minimises supports and enhances surface quality.
EOS has also partnered with Grenzebach and Volkmann to enable automated overnight starts and job changeovers, and closed-loop powder management for continuous operation.
Additional benefits can be found through the machine’s software compatibilities, with EOS reporting a 30% reduction in order-to-print times with open communications and web APIs, an increase in machine utilisation of 30% thanks to an early notification system, and a reduction in quality assurance efforts by up to 50% thanks to a ‘digital fingerprinting’ capability.
“At EOS, we live by our longstanding commitment to efficiency, safety, and innovation. Those pillars along with AM manufacturing innovations from partners like Volkmann and Grenzebach, have culminated in our most productive metal AM system to date,” said Sebastian Becker, Head of Product Management Metal at EOS. “Beyond the technical milestone of our RFS Pro, our customers will benefit from our deep collaborative relationships to successfully scale their AM production with confidence and consistency.”
The EOS M4 ONYX will be commercially available in early 2026, with the EOS M4 ONYX FLX being made available later in the year. Compatible materials include titanium, nickel, steel, and aluminium alloys, with additional options available on request.
EOS is displaying the EOS M4 ONYX machine at Formnext from Hall 11.1, Booth D41.
